GCC v3.4.3 was used to compile code for a Solaris 10 32-Bit platform, and GCC v3.4.4 for a Red Hat Enterprise Linux 4 32-Bit platform. My questions are... 1) Is GCC v4.4.0 fully backwards compatible with prior GCC versions? 2) Does v4.4.0 support the Solaris 10 (32-Bit) and Red Hat Enterprise Linux 4 (32-Bit) platforms? 3) Seeing that GCC v4.5.0 is already in the works, what is the Sunset date for v4.4.0? 4) Can you provide dates as to when 3.4.3 and 3.4.4 were no longer supported/replaced. 5) My guess is that v4.4.0 can compile the same languages supported under v3.4.3 and v3.4.4. Is this correct? If not, what are the differences? Any assistance is greatly appreciated. V/R, Andrew Myers